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APOD

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

A light brown nebula is seen on a dark starfield. The outline of the nebula makes it appear like an eagle ray fish. Please see the explanation for more detailed information.

LBN 86: The Eagle Ray Nebula

Explanation: This eagle ray glides across a cosmic sea. Officially cataloged as SH2-63 and LBN 86 , the dark nebula is composed of gas and dust that just happens to appear shaped like a common ocean fish . The interstellar dust nebula appears light brown as it blocks and reddens visible light emitted behind it. Dark nebulas glow primarily in infrared light , but also reflect visible light from surrounding stars. The dust in dark nebulas is usually sub-millimeter chunks of carbon, silicon, and oxygen , frequently coated with frozen carbon monoxide and nitrogen . Dark nebulas are also known as molecular clouds because they also contain relatively high amounts of molecular hydrogen and larger molecules . Previously unnamed, the here dubbed Eagle Ray Nebula is normally quite dim but has been imaged clearly over 20-hours through dark skies in Chile .

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Date November 27, 2023
Credit Image Credit & Copyright: Vikas Chander
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.